What does Romney remember?

Recently, at a campaign rally in Virginia, GOP presidential hopeful Mitt Romney said he remembered reciting the Pledge of Allegiance when he was in the fourth grade, but he can’t recall an incident several years later when he and some of his classmates forcibly gave a fellow classmate a demeaning haircut.

Is that selective memory or Stage 2 of Alzheimer’s disease? Some of his remarks, which he later retracted, and then retracted the retraction, point to the latter.